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Citation: Kaiping Yang, Qiang Zhou, Wei Wei, Wei Shao. Chemistry in Everyday Life: From Hand Warmers to Phase Change Energy Storage Materials[J]. University Chemistry, ;2026, 41(2): 307-313. doi: 10.12461/PKU.DXHX202502122 shu

Chemistry in Everyday Life: From Hand Warmers to Phase Change Energy Storage Materials

National Demonstration Center for Experimental Chemistry Education (University of Science and Technology of China), Hefei 230026, China

Corresponding author: Wei Shao, weishao@ustc.edu.cn
Received Date: 26 February 2025
Revised Date: 21 May 2025

In the context of global efforts toward carbon neutrality and peak carbon emissions, developing alternative energy solutions and improving energy efficiency have become critical priorities. Phase change materials (PCMs) show significant promise in addressing these challenges. This article explores the fundamental chemistry behind reusable hand warmers through the “hot ice” experiment, demonstrating how crystallization of supersaturated sodium acetate solution releases latent heat. Beyond its visual appeal, this experiment serves as an engaging introduction to thermal energy storage concepts. We draw parallels between electrical energy storage in batteries and thermal energy storage using PCMs, presenting several practical applications that highlight the potential of this technology for sustainable energy solutions.
- Saturated solution,
- Supersaturated solution,
- Sodium acetate,
- Hot ice experiment,
- Phase change,
- Phase change energy storage materials
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